From a942195b50bbb8e1a70b27fe5267c59d69ca8021 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <anonymous.maarten@gmail.com>
Date: Fri, 20 Dec 2024 18:24:49 +0100
Subject: [PATCH] Implement GroupImpl::Unknown (71.63%)

---
 LEGO1/tgl/d3drm/group.cpp | 56 ++++++++++++++++++++++++++++++++++++---
 LEGO1/tgl/d3drm/impl.h    |  5 +++-
 LEGO1/tgl/tgl.h           |  2 +-
 3 files changed, 58 insertions(+), 5 deletions(-)

diff --git a/LEGO1/tgl/d3drm/group.cpp b/LEGO1/tgl/d3drm/group.cpp
index a9df8fd6..bb05ef12 100644
--- a/LEGO1/tgl/d3drm/group.cpp
+++ b/LEGO1/tgl/d3drm/group.cpp
@@ -112,8 +112,58 @@ Result GroupImpl::RemoveAll()
 	return Error;
 }
 
-// STUB: LEGO1 0x100a3540
-Result GroupImpl::Unknown()
+// FUNCTION: LEGO1 0x100a3540
+Result GroupImpl::Bounds(D3DVECTOR *p_min, D3DVECTOR *p_max)
 {
-	return Error;
+    D3DRMBOX size;
+    IDirect3DRMFrame2 *frame = m_data;
+    size.min.x = 88888.f;
+    size.min.y = 88888.f;
+    size.min.z = 88888.f;
+    size.max.x = -88888.f;
+    size.max.y = -88888.f;
+    size.max.z = -88888.f;
+    IDirect3DRMVisualArray *visuals;
+    Result result = (Result) SUCCEEDED(frame->GetVisuals(&visuals));
+    if (result) {
+        int i;
+        for (i = 0; i < (int)visuals->GetSize(); i++) {
+            IDirect3DRMVisual *visual;
+            visuals->GetElement(i, &visual);
+            IDirect3DRMMesh *mesh;
+            /*
+	         * BUG: should be:
+	         *  visual->QueryInterface(IID_IDirect3DRMMesh, (void**)&mesh));
+	         */
+            result = (Result) SUCCEEDED(visual->QueryInterface(IID_IDirect3DRMMeshBuilder, (void**)&mesh));
+            if (result) {
+                D3DRMBOX box;
+                result = (Result) SUCCEEDED(mesh->GetBox(&box));
+                if (size.max.y < box.max.y) {
+                    size.max.y = box.max.y;
+                }
+                if (size.max.z < box.max.z) {
+                    size.max.z = box.max.z;
+                }
+                if (box.min.x < size.min.x) {
+                    size.min.x = box.min.x;
+                }
+                if (box.min.y < size.min.y) {
+                    size.min.y = box.min.y;
+                }
+                if (box.min.z < size.min.z)  {
+                    size.min.z = box.min.z;
+                }
+                if (size.max.x < box.max.x) {
+                    size.max.x = box.max.x;
+                }
+                mesh->Release();
+            }
+            visual->Release();
+        }
+        visuals->Release();
+    }
+    *p_min = size.min;
+    *p_max = size.max;
+	return result;
 }
diff --git a/LEGO1/tgl/d3drm/impl.h b/LEGO1/tgl/d3drm/impl.h
index 5522d3cb..b2e82f1c 100644
--- a/LEGO1/tgl/d3drm/impl.h
+++ b/LEGO1/tgl/d3drm/impl.h
@@ -335,7 +335,7 @@ class GroupImpl : public Group {
 	Result RemoveAll() override;
 
 	// vtable+0x30
-	Result Unknown() override;
+	Result Bounds(D3DVECTOR *p_min, D3DVECTOR *p_max) override;
 
 	IDirect3DRMFrame2* ImplementationData() const { return m_data; }
 
@@ -545,4 +545,7 @@ inline D3DRMMATRIX4D* Translate(FloatMatrix4& tglMatrix4x4, D3DRMMATRIX4D& rD3DR
 // SYNTHETIC: LEGO1 0x100a3d80
 // TglImpl::MeshImpl::`scalar deleting destructor'
 
+// GLOBAL: LEGO1 0x100dd1e0
+// IID_IDirect3DRMMeshBuilder
+
 } /* namespace TglImpl */
diff --git a/LEGO1/tgl/tgl.h b/LEGO1/tgl/tgl.h
index f19c89ab..830e9286 100644
--- a/LEGO1/tgl/tgl.h
+++ b/LEGO1/tgl/tgl.h
@@ -305,7 +305,7 @@ class Group : public Object {
 
 	// This is TransformLocalToWorld in the leak, however it seems
 	// to have been replaced by something else in the shipped code.
-	virtual Result Unknown() = 0;
+	virtual Result Bounds(D3DVECTOR *, D3DVECTOR *) = 0;
 
 	// SYNTHETIC: LEGO1 0x100a2510
 	// Tgl::Group::~Group